Braintree man charged with sexual assault in Cambridge

CAMBRIDGE - Police say a woman was sexually assaulted by a Braintree man who reached out of his SUV and grabbed her as she walked her bicycle down a street in Cambridge.

Cambridge police said the man, 39-year-old Andrew Ma, was arrested Saturday on a warrant issued after the Aug. 20 attack. He was charged with open and gross lewdness, indecent assault and battery and assault and battery.

Police say the woman was trying to fix her bicycle on Cambridge Street around 11:20 p.m. Aug. 20 when Ma pulled up in a black SUV and asked if she needed help. When the woman said she didn't need help and began to walk away, police said Ma pulled in front of her and asked if she could make change for a $20 bill.

Police said Ma then grabbed the woman’s wrist and touched her indecently before asking her to perform a sexual act and dropping his shorts inside the SUV. Police said the woman got away on her bicycle and called 911 when she got home.